After you invite guests to your event, an invitation email will be sent using your Google Account.
If you want to invite guests to your event, you need to create and add the event in your Google Calendar.
Open Calendar and create a new event. Tap the Calendar field and then select your Google Account (or one of your other Google Calendars).
Add details about the event, such as date and time, location, and more.
In the Guests field, enter the email addresses of everyone you want to invite to the event. Separate multiple addresses with commas (,).
If the people to whom you send invitations use Google Calendar, they’ll receive an invitation in Calendar and by email.
Tap Save to add the event to your Google Calendar.